Most people who can make lots of money will surely say that you should work harder for this, and I agree with that statement, but I think it will take more than that. First, you need to find a profitable activity, in which you are able to produce something that generates demand.
It is not possible to succeed before it works. But there is no guarantee of being rich by working hard. So it is important to be able to work right from the very start. But the most important thing is to be able to use the right investment tools. It is necessary to direct the workforce of others and to have a good team.
Nobody can make more money on their alone. You need to build a trade that ongoing independently.